■ adjective ( ghastlier , ghastliest )
1》 causing great horror or fear; macabre.
2》 deathly white or pallid.
3》 informal very objectionable or unpleasant.
Derivatives
ghastliness noun
Origin
ME: from obs. gast 'terrify', from OE gstan , of Gmc origin; related to (and influenced in spelling by) ghost .